Detailed research indicates that a particular nutrient which is part of the B-complex range may have a surprising effect on our moods and stress levels. At the State University of Iowa, College of Medicine, volunteers were given a diet adequate in all nutrients except this vitamin. They became easily upset, discontented, irritable, depressed and quarrelsome. When we are under stress our adrenal glands are responsible for dealing with it. After enough stress they can no longer help us and we begin to feel the burn. This vitamin is vital for keeping the adrenals fueled and the amount needed daily varies constantly with the severity and number of stresses one is under. Clinical Nutritionists believe that this vitamin could be very useful to produce more zest and drive in anyone who feels they should have more get-up-and-go!